[mpls] FW: New Version Notification for draft-ietf-mpls-ri-rsvp-frr-02.txt
Chandrasekar Ramachandran <csekar@juniper.net> Fri, 11 August 2017 12:39 UTC
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From: Chandrasekar Ramachandran <csekar@juniper.net>
To: "mpls@ietf.org" <mpls@ietf.org>
CC: Vishnu Pavan Beeram <vbeeram@juniper.net>, Loa Andersson <loa@pi.nu>, "n.leymann@telekom.de" <n.leymann@telekom.de>
Thread-Topic: New Version Notification for draft-ietf-mpls-ri-rsvp-frr-02.txt
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Date: Fri, 11 Aug 2017 12:39:43 +0000
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Subject: [mpls] FW: New Version Notification for draft-ietf-mpls-ri-rsvp-frr-02.txt
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https://datatracker.ietf.org/doc/html/draft-ietf-mpls-ri-rsvp-frr-02.html We just posted revision 2 of the draft with editorial changes relating to the text involving references to summary FRR draft (diff given below). https://www.ietf.org/rfcdiff?url1=draft-ietf-mpls-ri-rsvp-frr-01&url2=draft-ietf-mpls-ri-rsvp-frr-02 Thanks, Chandra. -----Original Message----- From: internet-drafts@ietf.org [mailto:internet-drafts@ietf.org] Sent: Friday, August 11, 2017 5:55 PM To: Ina Minei <inaminei@google.com>; Dante Pacella <dante.j.pacella@verizon.com>; Chandrasekar Ramachandran <csekar@juniper.net>; Tarek Saad <tsaad@cisco.com>; Chandrasekar Ramachandran <csekar@juniper.net> Subject: New Version Notification for draft-ietf-mpls-ri-rsvp-frr-02.txt A new version of I-D, draft-ietf-mpls-ri-rsvp-frr-02.txt has been successfully submitted by Chandra Ramachandran and posted to the IETF repository. Name: draft-ietf-mpls-ri-rsvp-frr Revision: 02 Title: Refresh Interval Independent FRR Facility Protection Document date: 2017-08-11 Group: mpls Pages: 24 URL: https://www.ietf.org/internet-drafts/draft-ietf-mpls-ri-rsvp-frr-02.txt Status: https://datatracker.ietf.org/doc/draft-ietf-mpls-ri-rsvp-frr/ Htmlized: https://tools.ietf.org/html/draft-ietf-mpls-ri-rsvp-frr-02 Htmlized: https://datatracker.ietf.org/doc/html/draft-ietf-mpls-ri-rsvp-frr-02 Diff: https://www.ietf.org/rfcdiff?url2=draft-ietf-mpls-ri-rsvp-frr-02 Abstract: RSVP-TE relies on periodic refresh of RSVP messages to synchronize and maintain the LSP related states along the reserved path. In the absence of refresh messages, the LSP related states are automatically deleted. Reliance on periodic refreshes and refresh timeouts are problematic from the scalability point of view. The number of RSVP-TE LSPs that a router needs to maintain has been growing in service provider networks and the implementations should be capable of handling increase in LSP scale. RFC 2961 specifies mechanisms to eliminate the reliance on periodic refresh and refresh timeout of RSVP messages, and enables a router to increase the message refresh interval to values much longer than the default 30 seconds defined in RFC 2205. However, the protocol extensions defined in RFC 4090 for supporting fast reroute (FRR) using bypass tunnels implicitly rely on short refresh timeouts to cleanup stale states. In order to eliminate the reliance on refresh timeouts, the routers should unambiguously determine when a particular LSP state should be deleted. Coupling LSP state with the corresponding RSVP-TE signaling adjacencies as recommended in RSVP-TE Scaling Recommendations (draft-ietf-teas-rsvp-te-scaling-rec) will apply in scenarios other than RFC 4090 FRR using bypass tunnels. In scenarios involving RFC 4090 FRR using bypass tunnels, additional explicit tear down messages are necessary. Refresh-interval Independent RSVP FRR (RI- RSVP-FRR) extensions specified in this document consists of procedures to enable LSP state cleanup that are essential in scenarios not covered by procedures defined in RSVP-TE Scaling Recommendations. Please note that it may take a couple of minutes from the time of submission until the htmlized version and diff are available at tools.ietf.org. The IETF Secretariat
- [mpls] FW: New Version Notification for draft-iet… Chandrasekar Ramachandran